The graph shows the amount of a medicine m, in milligrams, remaining in a patient’s body h hours after receiving an injection. The amount of the medicine decreases exponentially. a. By what factor did the medicine decrease in the first hour and a half? Explain how you know. b. By what factor did the medicine decrease in the first half hour? What about in the first hour? Explain how you know. c. Write an equation relating m, the number of milligrams of the drug in the patient’s body, and h, the number of hours since the injection.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter7: Percents
Section7.5: Percent Of Change
Problem 7C
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 The graph shows the amount of a medicine m, in milligrams, remaining in a patient’s body hours after receiving an injection. The amount of the medicine decreases exponentially.

a. By what factor did the medicine decrease in the first hour and a half? Explain how you know.

b. By what factor did the medicine decrease in the first half hour? What about in the first hour? Explain how you know.

c. Write an equation relating m, the number of milligrams of the drug in the patient’s body, and h, the number of hours since the injection.

 

 

Input Field 3 of 3
Instructions

 

 

† (0, 270)
250
Align center
200
150
100
(1.5, 80)
50
1
h (hours since injection)
0.5
1.5
2
2.5
m (mg of drug in body)
Transcribed Image Text:† (0, 270) 250 Align center 200 150 100 (1.5, 80) 50 1 h (hours since injection) 0.5 1.5 2 2.5 m (mg of drug in body)
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